UV curable, flame retardant, and pressure-sensitive adhesives with two-way shape memory effect

Novel UV curable acrylic pressure-sensitive adhesives (PSAs) with exceptional flame retardancy and promising two-way shape memory effect have been developed using a commercial diethyl phosphoramidate as multifunctional tackifier for the first time. The abundant hydrogen bonds high viscosity of resultant networks contribute to low temperature repeatable adhesions. PSA 5 wt % exhibited best overall adhesion at both 25 °C 0 °C, especially relatively peak adhesive stress highest work adhesion. Owing synergistic nitrogen containing acylate monomer, 15 wt% endowed sample self-extinguishing ability. Moreover, higher viscoelasticity makes tackified PSAs better property. In particular, elongation upon cooling contraction heating are 57.2% 55.9%, respectively.